/*container*/
.container {
    width: 400px;
    height: 600px;
    margin: 0px auto;
    border: 0px solid #000;
    border-radius: 20px;
    margin-top: 50px;
    background-color: #EAECF3;
    box-shadow: 0 1px 6px rgb(32 33 36 /28%);;
}

.container div {
    display: flex;
}

/*button*/
button {
    height: 50px;
    flex: 1;
    border: 0px solid #000;
    border-radius: 15px;
    background-image: linear-gradient(135deg, #fff, #d5d5d7);
    font-size: 28px;
    margin: 10px;
    margin-top: 18px;
}

button:active {
    background-image: linear-gradient(135deg, #d5d5d7,#fff);
}

.s1 {
    background-image: linear-gradient(135deg, #fff,#cfd2e0);
}

.s1:active {
    background-image: linear-gradient(135deg, #cfd2e0, #fff);
}

.s2 {
    background-image: linear-gradient(135deg, #fff, #ecb34d);
}

.s2:active {
    background-image: linear-gradient(135deg, #ecb34d, #fff);
}

.s3 {
    background-image: linear-gradient(135deg, #fff, #4f61f2);
}

.s3:active {
    background-image: linear-gradient(135deg, #4f61f2, #fff);
}

/*input*/
.input {
    width: 99%;
    height: 200px;
    border-bottom: 1px solid #b0b2b8;
}

.input .content-box {
    display: block;
    width: 80%;
    height: 60%;
    margin: auto;
    border: 0px solid #000;
    border-radius: 10px;
    background-color:aliceblue;
}

.input .content-box #content {
    display: block;
    width: 88%;
    height: 60%;
    padding: 20px;
    font-size: 36px;
    word-wrap: break-word;
    overflow-y: hidden;
}

.error_message {
    color: red;
}